Model
333A/334A
Section
I
300
pv
1
mV-30 V
100
V-300 V
Table
1-1.
Specifications (Cont'd)
30
HZ-300
IrHz
20
HE-~OO~HZ
10
He-1
MHe
5
Hz-3
MHe
10 HE-300
~HZ
5
He-500
kHz
Distortion Introduced
by
Instrument:
>
-70
dB
from
5
He
to 200
kHz
>
-64
dB
from 200 kHz to
600
kHz
Meter
indication
is
proportional to the aver-
age
value
of
a
waveform.
FREQUENCY CALIBRATION ACCURACY
Better
than
*5%
from
Better
than
f
10%
from
300
kHz
to
600
kHz
5
Hz
to 300 kHz
INPUT IMPEDANCE
Distortion
Mode:
1
MS1
*5%
shunted
by
<70
pF.
Voltmeter Mode:
1
Mi2
15%
shunted
by
40
pF (333A
only),
1
Mi2
*5%
shunted by
45
F
(334A
only),
1
to
300
V
ranges;
1
MS1
*5
4l
shunted
by<70
pF,
300
pV to
0.3
V
ranges.
INPUT LEVEL
FORDISl?ORTIONMEASOaEMENTS
0.3
V
rrns for
100%
set
level (up to
300
V
may
be
attenuated to
set
level reference). The
minimum measurable distortion
for
floating
operation on the
X1
frequency
range
L
50dB
below the fundamental.
DC ISOLATION
Signal
ground may
be
rl00
Vdc from external
chassis.
VOLTMETER RANGE
300
pV
to
300
V
rrns
full scale
(13
ranges),
10
dB
per
range.
5
Hz
to
3
MHz
(300
pV
range:
20
Hz-500
Hie).
VOLTMETER FREQUENCY RANGE
VOLTMETER ACCURACY:
RANGE
I
*2%
I
*5%
I
NOISE MEASUREMENTS
Voltmeter
residual
noise on
the
300
pV
range:
<
25
pV
rms terminated
in
shielded
60OQ
<30
pV
rrns
terminated in shielded
100
kS1.
OUTPUT
For input frequencies from
20
Hz
to 600
kRz,
0.1
V
rma
*
0.01
V
open circuit
for
full
scale
meter deflection;
0.05
V
rms
f
0.005
V
into
2
kS2
for
full scale meter deflection.
AUTOMATIC
NULLWG
MODE
Set
Level:
At
least
0.2
V
rms.
Frequency Ranges:
X1,
manual null tuned to
less
than
3%
of
set
level; total frequency hold-in
io.
5%
about
true manual
null.
X10
through
X10
K,
manual
null
tuned
to
less
than
10%
of
set
level;
total
frequency
hold-in
1
1%
about
true manuaX null.
AUTOMATIC NULL ACCURACY
5
Hz
to
100
Iiz:
Meter reading within
0
to
+3
dB
of manual null.
100 Hz
to
600
kHz:
Meter reading within0 to
+l.
5
dB
of manual null.
HIGH-PASS FILTER
3
dB point
at
400
Hz
with
18
dB
per
octave
roll
off.
60
Hz
rejection
>
40
dB.
Normally used
only
with fundamental frequencies greater than
1
BHZ.
POWER SUPPLY
100
V/120 V/220 V/240
V
+
5%
-
108,
48
-
66
Hz,
approximately 4
watts.
-
MODEL 334A
1.6
MHz
to
65
MHz:
Distortion introduced
by
detector
is
c
1%
for
3
to
8
volts rms carriers
modulated
30%.
Same
as
Model 333A except
as
indicated below:
AM
DETECTOR
High
impedance dc restoring
peak
detector with
semi-conductor
diode
operates from
550kHz
to
greater than
65
MHz.
Broadband input.
Maximum
input;
40
V
p-p
ac
or
40
V
peak
transient.
CARRIER
FREQUENCY
550kHzto
1.6
MHz:
Distortion introduced
by
detector
is
c
0.3%
for
3
to
8
volt carriers
modulated
30%.
NOTE
Distortion measurement
at
carrier levels
as
low
as
1
volt may
be
made with reduced
accuracy.
OPTION
01
Indicating meter
has
W
characteristics con-
forming to FCC Requirements for
AM,
FM,
and TV broadcasting.
1-2
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